<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.mironet.cz/zebra-printer-110xi4-tiskarna-carovych-kodu-thermotransfer-600dpi-printserver-rezacka-usb-serial-paralel+dp255212/>